短语词组短語semi arid loess hill region 半乾旱黃土丘陵區loess hill -gully region 黃土丘陵溝壑loess hill and gully region 黃土丘陵區Junger loess hill -gully region 準格爾黃土丘陵溝壑區loess hill semi -arid region 黃土丘陵半乾旱區 返回 loess hill region